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Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm
| Radial velocity measurements. I - Ground-based observations of the program stars for the HIPPARCOS satellite
The radial velocities of 272 stars brighter than m(pg) = 8.5 aredetermined by digital microphotometric measurement of plates obtainedwith dispersion 80 A/mm using the Marly slit spectrograph on the 120-cmtelescope of the Observatoire de Haute Provence. The objects wereselected as probable members of the input catalog for the ESA Hipparcosastrometric satellite. The measurement techniques and data-reductionprocedures are described in detail, and the results are presented inextensive tables and graphs and briefly characterized.
| A Finding List of Stars of Spectral Type A5 and Earlier in Regions at High Galactic Latitudes. V. 1 H L F 3
An objective prism survey has been made in a 19.3 square degree regionin the 1 HLF 3 area (l^II = 76°, b^II = +45°) continuing aninvestigation of galactic structure perpendicular to the galactic plane.A finding list containing positions and spectral types for 16 stars ispresented with finding charts for the stars too faint to be included inthe Bonner Durchmusterung.
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Osservazione e dati astrometrici
| Costellazione: | Ercole |
| Ascensione retta: | 16h07m08.17s |
| Declinazione: | +49°04'59.1" |
| Magnitudine apparente: | 7.609 |
| Distanza: | 102.564 parsec |
| Moto proprio RA: | -13.2 |
| Moto proprio Dec: | -2.2 |
| B-T magnitude: | 7.935 |
| V-T magnitude: | 7.636 |
Cataloghi e designazioni:
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